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John O'Brien Is this you?

About John O'Brien

John O'Brien, MD is a Doctor primarily located in San Francisco, CA, with another office in San Francisco, CA. He has 49 years of experience. His specialties include Internal Medicine and Cardiology. John O'Brien is affiliated with John Muir Medical Center-Concord Campus, St Francis Mem Hosp, San Francisco, Ca and ST Marys Medical Center. He speaks English.

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Primary Address

521 Parnassus Ave
San Francisco, CA 94143
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John O'Brien has the following 2 specialties

  • Internal Medicine

    An internist is a physician who focuses on the diagnosis and treatment of conditions that affect the adult population—both acute and chronic.
    These doctors are often who adults see as their primary physicians because they treat a broad...

  • Cardiology

    Cardiologists are doctors who specialize in the diagnosis, prevention and treatment of conditions related to the heart and blood vessels.
    A patient may be referred to a cardiologist if he experiences symptoms like chest pains, shortness...


5 Expertise

See areas of expertise for treating specific conditions, procedures and surgeries for this doctor.
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    John O'Brien is similar to the following 3 Doctors near San Francisco, CA.